/*
 * Copyright 2002-2018 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.http.server.reactive.bootstrap;

import java.util.concurrent.atomic.AtomicReference;

import reactor.netty.DisposableServer;

import org.springframework.http.server.reactive.ReactorHttpHandlerAdapter;

/**
 * @author Stephane Maldini
 */
public class ReactorHttpServer extends AbstractHttpServer {

    private ReactorHttpHandlerAdapter reactorHandler;

    private reactor.netty.http.server.HttpServer reactorServer;

    private AtomicReference<DisposableServer> serverRef = new AtomicReference<>();


    @Override
    protected void initServer() {
        this.reactorHandler = createHttpHandlerAdapter();
        this.reactorServer = reactor.netty.http.server.HttpServer.create()
                .tcpConfiguration(server -> server.host(getHost()))
                .port(getPort());
    }

    private ReactorHttpHandlerAdapter createHttpHandlerAdapter() {
        return new ReactorHttpHandlerAdapter(resolveHttpHandler());
    }

    @Override
    protected void startInternal() {
        DisposableServer server = this.reactorServer.handle(this.reactorHandler).bind().block();
        setPort(server.address().getPort());
        this.serverRef.set(server);
    }

    @Override
    protected void stopInternal() {
        this.serverRef.get().dispose();
    }

    @Override
    protected void resetInternal() {
        this.reactorServer = null;
        this.reactorHandler = null;
        this.serverRef.set(null);
    }

}
